Mophead clamp



A. BRO ZYNA MOPHEAD CLAMP June 15, 1954 Filed June 11, 1952 INVENTOR. 74 E 4 o z vA/A ATTOK/VEY.

Patented June 15, 1954 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to mop head clamps and is directed to the provision of a mop head clamp which may be readily manufactured in two pieces of plates of novel structural features which will enable them to be readily clamped onto the stem of a mop head in a novel fashion which will become apparent from a consideration of the drawing and description below.

In the drawing:

Fig. 1 is a perspective fragmentary view of a pair of plates embodying the invention, to secure the mop head (shown fragmentarily), to a mop rod, the latter being indicated in dotted lines in Figs. 2 and 4,

Fig. 2 is a side elevational view of the plates of Fig. 1, the mop head stem being shown clamped between the second arcuate portions of said plates, the first arcuate portions of said plates being shown clamped onto the end of the mop rod,

Fig. 3 is a perspective view of another form of plate members embodying the invention,

Fig. 4 is a similar view showing the arrangement, in the case of the plates of Fig. 3 for clamping the plates onto the threaded end of a mop head rod, and

Fig. 5 is an end elevational view, taken on line 55 of Fig. 1.

Referring to the drawings, the mop head clamp of my invention is shown in Fig. 1 to comprise a pair of plates [0, ll, comprising first arcuate sections l2, l3 and second arcuate sections l4, l5, of less width than the first arcuate sections, said second arcuate sections having impressions l6, l1, coinciding with adjacent arcs of the stem l8, the latter being preferably formed by a pair of wire members I9, 26 (see Fig. 5) wound upon each other to define the helical stem l8 connected to and projecting from the mop head 2|. Lateral vanes 22, 22' are connected to the second arcuate sections and extend beyond the longitudinal edges of but in the same plane as the first arcuate sections. The plates ill, I l have bolt-receiving apertures 23, 24, intermediate the ends of the first and second arcuate sections, so that the first arcuate sections of the plates may be clamped onto the rod 25, shown in dotted lines in Fig. 2, and the second arcuate sections may be clamped onto the stem l8 with adjacent arcs of the latter adapted to be rotated and clamped between the impressions l6, 11 in the second section. The first arcuate sections may be provided with indentations 30, 3| to bite into the material of the rod 25, when the plates are bolted onto the rod as shown in Fig. 2.

For use with a mop head rod 26 (Fig. 4) having a threaded end, complementary thread arcs 21, 28 may be provided on the first arcuate section for engagement with said threaded rod end.

It will be apparent from the foregoing description that the plates of the clamp of this invention may be readily positioned initially on the mop rod and over the stem l8, and the latter may either be slid longitudinally to approximately its correct position or rotated with the plates held assembled; the bolt means 29, 30 passed through the apertures 23, 24 of the plates !0, H may then be tightened to clamp the parts in that position, as shown in Fig. 2. Essentially the same arrangement may be used in the case of the form of invention shown in Figs. 3 and 4, except that in such form, the threaded end of the rod 25 might first either be loosely inserted or threaded into the complementary thread arcs 21, 28, and then the bolt means 29', 30 tightened to secure the parts in that position.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

A clamp for securing a mop head to the front end of a mop rod, the mop head having a stem consisting of strands of stiff wire twisted together and thereby providing a stiff stem having helical threads; said clamp comprising a pair of clamping plates of stiff metal separate from each other, each clamping plate having an elongated body portion arcuate transversely for the major portion of its length and having a tapered forward portion merging into a neck portion of reduced width and concentric with the body, flat vanes integral with and extending along opposite side edges of the tapered forward portion of the body and said neck portion, said vanes gradually increasing in width towards their front ends and having their front edges fiush with the front end of the neck portion, the neck portions of the plates having inwardly projecting ribs spaced from each other longitudinally of the neck portions and extending spirally about the said neck portions in position for engagement between the threads of said stem when the latter is inserted and disposed longitudinally between the neck portions of the clamp, said plates being provided with openings adjacent the junction of the body portions and the tapered forward portions, and a bolt disposed transversely of said clamp and passing through the openings and tightened to draw the clamping plates toward each other and holding the vanes against each other.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,194,894 Standefer Aug. 15, 1916 2,064,502 Teare Dec. 15, 1936 2,103,442 Bartosz Dec. 28, 1937 2,104,331 Preisser Jan. 4, 1938 

